Versatile and Efficient. With the revolutionary EC-TEC brushless motor, the durable C 12 Li and C 15 Li-Ion drills can easily power through over a million screws with minimal wear. The brushless motor is extremely energy efficient, which translates into longer run times and fewer trips to the charger. The compact design can fit into more places without the extra bulk and weight of traditional drill designs. Combined with the Festool FastFix chuck system, the C 12 Li and C 15 Li can do the job of five drills. All of this power and capability packs nicely into one slim design. Never before has something so small been able to do so much.